baber/WOPTO huggingface dataset:
Patent CA-2076383-C (CA)
Inventor: FAXON JOHAN
IPC: B08B9/053
Filed: 1991-03-08
Granted: 1996-01-16
Abstract: There is mentioned a process and an arrangement for cleaning of pipelines, and especially ventilation pipes and ventila-tion ducts in buildings, by means of a largely spherical cleaning means (1) which is connected via a supply conduit (2) with a source of pressure medium, and which exhibits a nozzle opening in the form of a largely continuous annular gap (6) which ex-tends along the periphery of the cleaning means (1) and which is connected to the supply conduit (2) and the source of pressure medium. The medium is made to discharge through the annular gap (6) in order partly to clean inner walls of the line, and partly, as a result of the forces of reaction from the discharging medium, to make the cleaning means (1) move into the pipeline. The cleaning means (1) is brought into contact with an inner wall of the line in that a reduced pressure is established between the cleaning means (1) and the inner wall and it is made to move around about the cross-section of the line by twisting of the supply conduit.
Patent CA-2076534-C (CA)
Title: Safety razors and blade units therefor
Inventor: WAIN KEVIN JAMES
IPC: B26B21/22
Filed: 1991-03-22
Granted: 1998-10-06
Abstract: A safety razor head comprises a head frame (101) carrying a cap member (104) and two blade units (105) all mounted in slots in end walls (103) of the frame (101) so as to be movable vertically, i.e. towards and away from the base (102) of the frame. The movable elements are urged upwardly by springs (106). The blade units (105) comprise metal pressing (108) of inverted L-shaped cross-section. Blade members (107) are attached to the top limbs (109) and guard portions (111, 112) are spaced forwardly of the blade edges (107A). The pressing (108) has projecting ears (114) at opposite ends by which each unit is mounted in the frame (101) for limited pivotal movement about an axis parallel with and close to the blade edge (107A).
Patent CA-2080830-C (CA)
Title: Decontaminated biological material
Inventor: BOHN BURGHARD
IPC: A61L2/00
Filed: 1991-04-13
Granted: 2002-08-13
Abstract: The invention concerns decontaminated biological material, in particular liquids, arising from treatment with acid followed by treatment with alkali. The progress of the treatment can be monitored and/or the end point determined by determining the residual LDH (lactate dehydrogenase) activity. The invention also concerns a process for decontaminating biological material, in particular biological liquids, in which the pH value is lowered by the addition of acid and, after a given length of time, raised again by the addition of alkali. The process of the treatment can be monitored and/or the end point determined by determining the (residual) LDH activity.
Patent CA-2083317-C (CA)
Title: Plasma ion nitrided stainless steel plates and method for the manufacture and use of same
Inventor: LAURENCE KENNETH J
IPC: B32B38/04
Filed: 1992-11-19
Granted: 2000-01-18
Abstract: A process and apparatus is disclosed for the fabrication of press plates hardened by the use of plasma ion nitriding techniques to produce wear resistant decorative laminate containing alumina grit while improving associated press plate useful life. The application of this process to press plates having exacting final microfinish requirements is possible due to the determination of interdependancies between parameter settings and expected results. These interdependancies include the work piece geometry, surface and subsurface structure and desired results, process temperatures, pressures, and duration of heat-up time, thermal loading, reflective radiation and heat effects, cooling systems, and gas mixture composition.
Patent CA-2083749-C (CA)
Inventor: OKANOUE KAZUHIRO
IPC: G11B20/10
Filed: 1992-11-25
Granted: 1998-08-18
Abstract: The maximum likelihood sequence estimation apparatus decodes a digital data signal.  The apparatus includes: sampling device to perform sampling and output a received signal by sampling pulses having a constant time interval T and N different sampling phases, an operation device to operate a branch metric of the received signal sampled by the N different sampling phases, and a device to perform maximum likelihood sequence estimation of the branch metric.
Patent CA-2088102-C (CA)
Title: Fastening element
Inventor: MATHYS ROBERT
IPC: A61B17/78
Filed: 1993-01-26
Granted: 1999-01-12
Abstract: The fastener, which is especially adapted for bones, consists of a shaft (2) bearing a thread (1) with variable pitch, a front end (3) and a rear end (4).    The thread (1) is present over the entire area of the shaft (2), and in the area of the rear end (4) is characterized by a smaller pitch than in the area of the front end (3).    Thanks to the diminishing pitch of the thread (1) in the proximal direction, a locally differentiated intraosseous pressure generation takes place.  In accord with the well-known Wolff's Law, this leads to a controlled bone growth along the loading axis and thus an improvement in the stability of the implanted fastener.
Patent CA-2088366-C (CA)
Title: Sugar-based polymers
Inventor: DORDICK JONATHAN S
IPC: C08F20/28
Filed: 1992-05-27
Granted: 1998-07-28
Abstract: Chemoenzymatic methods of making sugar-based polymers are disclosed as well as novel sugar-based polymers. In one embodiment, acylated sugars are copolymerized with coreactants to yield novel sugar-based polymers. In another embodiment, non reducing sugars acylated with a compound having a terminal double bond are polymerized to yield novel sugar-based polymers.
Patent CA-2090055-C (CA)
Title: Modular vault for storage tanks
Inventor: CAREY JOHN M
IPC: B65D90/24
Filed: 1993-02-22
Granted: 1997-12-23
Abstract: A containment vault for storage tanks formed of substantially duplicate modules arranged in sets of four to encircle a received tank and provide an inwardly directed octagonal support rib assembly.  The modules are clamped together to define each set and the sets in turn longitudinally aligned and clamped to define the length of the vault.  The opposed ends of the vault are enclosed by bulkheads secured by the module clamping system.
Patent CA-2091322-C (CA)
Title: Dispensing tube for storage and dispensing two creamy or pasty products
Inventor: SCHNEIDER BERNARD
IPC: B65D81/32
Filed: 1993-03-09
Granted: 1997-05-13
Abstract: The invention relates to a tube (1) comprising a neck (2) having a dispensing orifice (3), this neck (2) being followed by a shoulder (4) and a flexible skirt (5) and, above the said skirt (5), one or more traversing lateral windows (9), characterized in that the neck (2) comprises an external annular leak-proof means of fixing (10; 30) an external neck (27) by fitting together, and in that the said neck (2) comprises two chambers (6 and 7) which are leak-proof with respect to one another up to the said dispensing orifice (3), the first one (6) connecting with the interior (8) of the skirt (5) of the said tube (1) and the second one (7) carrying the said traversing lateral window or windows (9). The invention also relates to the dispenser obtained by fitting an external tube over this tube. It is used for the storage and dispensing of pairs of products without prior contact in the pharmaceutical, cosmetic, food or maintenance industries. <IMAGE>
Patent CA-2091821-C (CA)
Title: Optical communications system employing fiber-optic amplifiers and control of the transmitter wavelength
Inventor: HEIDEMANN ROLF
IPC: H04B10/50
Filed: 1993-03-17
Granted: 1999-02-02
Abstract: Fiber-optic amplifiers as they are employed in optical communications systems, for example those including light waveguides doped with Er3+,  have a gain that is highly dependent on the wavelength in the wavelength range of interest.   According to the invention,  the emission wavelength .lambda.o of the semiconductor laser of  an  optical transmission system is regulated by way of a control device provided within the optical transmitter to that wavelength at which the fiber-optic amplifiers have a maximum gain. The control device finds the optimum wavelength in that it evaluates  the  light  absorption  of  a  reference  light waveguide piece whose maximum lies at the same wavelength at which the fiber-optic amplifier has its maximum gain and regulates the emission wavelength of the laser to the wavelength of the maximum absorption in the reference light waveguide piece.
Patent CA-2094068-C (CA)
Title: Impact modified graft copolymer compositions containing broad molecular weight distribution polypropylene
Inventor: DENICOLA ANTHONY J JR
IPC: C08L53/02
Filed: 1993-04-15
Granted: 2002-10-29
Abstract: Disclosed are impact modified graft copolymer compositions comprising (A) from 10 to 90% of a graft copolymer of a propylene polymer material having graft polymerized thereto one or more vinyl monomer(s), (B) from 90 to 10% of at least one broad molecular weight distribution propylene polymer material, and (C) from 2 to 40% of at least one rubber component, wherein (A) + (B) + (C) is 100 %, and filled compositions thereof. The compositions are useful as stand-alone structural materials.
Patent CA-2096154-C (CA)
Inventor: SMETTERS ROBERT
IPC: F16K15/18
Filed: 1993-05-13
Granted: 1998-06-16
Abstract: A quick change coupling arrangement for holding an actuator shaft of a hydraulic dampening unit to a valve shaft of a swing check valve.  The coupling arrangement provides knob portions arranged on opposing free ends of the valve shaft and the actuator shaft, which are captured in sandwich fashion between two semi-circular cylindrical shell connectors.  An outer sleeve is provided which can be temporarily displaced upward on the actuator shaft during assembly of the shell sections over the knob portions and then slid downward to cover the shell sections and hold the shell connectors together preventing radial departure from the knob portions.  A set screw is provided to hold the sleeve in axial fixation with one of the shell connectors.
Patent CA-2099762-C (CA)
Title: Vehicle leaf spring with a longitudinal discontinuity for crack propagation
Inventor: PIERMAN RICHARD F
IPC: F16F1/20
Filed: 1993-06-29
Granted: 1999-03-30
Abstract: A vehicle suspension member such as a leaf spring (50) is provided comprising at least one composite leaf or plate (2) having a second layer (12) sandwiched within a first layer (10) in such a manner as to provide at least one discontinuity therein effective to divert crack propagation in a direction generally parallel to a longitudinal axis ("L/A") extending between opposite ends of plate (2).
Patent CA-2102817-C (CA)
Title: Combine harvester with dust collection
Inventor: LITTLE CLINTON W
IPC: A01D41/12
Filed: 1993-11-10
Granted: 1995-02-07
Abstract: A  conventional  header  of a  combine  harvester includes a sickle knife and a table onto which the crop material  is  deposited by  a  reel.   The crop material is transported  toward  the  feeder  housing  of  the  combine harvester by an auger trnsportation system.  At the feeder the housing the auger includes a cylindrical drum portion with fingers to push the material into the feeder housing.          This conventional arrangement is modified by the addition of a  suction  shroud positioned over the central cylindrical portion of the auger to extrract dust when cutting dusty crops such as peas.
Patent CA-2103362-C (CA)
Inventor: CHIOTIS ACHILLES
IPC: C09D5/18
Filed: 1992-05-28
Granted: 2002-04-16
Abstract: Flame retarded organopolysiloxane gels useful as sealants for articles designed for protective, sealing or insulative applica-tions include (i) an organopolysiloxane gel having repeat units of structure (I) where each R is independently phenyl or C1-C4 al-kyl or fluoroalkyl, at least 40 % of the R groups being phenyl; and (ii) an additive package mixed with the organopolysilox-ane, which is (a) zinc oxide; (b) antemony oxide; (c) a brominated compound having a molecular weight of at least 450 and a bromine content of at least 40 weight %; (d) a chlorinated compound having a molecular weight of at least 300 and a chlo-rine content of at least 40 weight %; or (e) combinations of the above. The additive package is used in an amount between about 10 and about 60 parts by weight per 100 parts by weight of organopolysiloxane, An exemplary article is shown in the figure which depicts an in-line crimpsplicer (10) which includes a connector (12), an insulating sleeve (14) and a flame re-tarded gel or encapsulant (16),
Patent CA-2117771-C (CA)
Title: Razor with a movable cartridge
Inventor: OLDROYD BRIAN
IPC: B26B21/22
Filed: 1993-04-12
Granted: 1999-03-23
Abstract: A razor includes a handle and a cartridge (11) pivotally mounted thereon by a cartridge carrier (15). A four-bar linkage comprising links (16) and a pair of bell cranks (17A, 17B) mounts the cartridge carrier (15) to the handle so that a centre of rotation of the cartridge is on or below a surface (42) to be shaved.
Patent CA-2123484-C (CA)
Title: Compressible printing blanket and method of making same
Inventor: BYERS JOSEPH L
IPC: B32B5/26
Filed: 1992-11-13
Granted: 2001-02-06
Abstract: 2123484 9309941 PCTABS00022 A multi-ply laminated compressible printing blanket (10) for use in offset printing comprising in order, a first compressible fabric ply (12), a compressible elastomeric layer (24), at least two additional fabric plys (32, 34) situated above the compressible elastomeric layer, an elastomeric surface (44) and an elastomeric printing face (46) deposited by a solventless process and having a surface profile adapted for reducing dot gain while enhancing the releasability of the printed matter. At least the lowermost fabric ply (12) incorporates a protective coating to prevent wicking of inks, water and/or solvents through the blanket which might otherwise lead to swelling and delamination of the various plys. In addition, both the fabric plys and the compressible layer are at least partially coated with a matrix material (20) having dispersed therein a plurality of closed cells (26) formed, e.g., with the use of blowing agents or by adding thereto a plurality of expanded or expandable microspheres. Articles which may also be formed from the composite structure include gaskets, packing materials, flexible diaphragms or printing blankets.
Patent CA-2123603-C (CA)
Title: Absorbent article having elasticized side flaps
Inventor: MORITA YASUKO
IPC: A61F13/56
Filed: 1992-11-30
Granted: 1998-12-29
Abstract: An absorbent article having a liquid permeable topsheet (2), a liquid impermeable backsheet (3) and a liquid absorbent pad (4) for absorbing a liquid exuded from the human body positioned therebetween, and having an elasticized side flap (20) along each side edge of the absorbent article. The sideflap has a loop member (21) formed from either the topsheet or the backsheet, or an optional secondary nonwoven sheet, which extends from and loops back toward the side edge fo the absorbent pad, and an inserted member (30) formed from a layer which extends from the side edge of said absorbent pad. An elastic material (40) is affixed along a portion of the length of the inserted member, and a seal (10) affixes the inserted member inside the loop member at its base end. The absorbent sanitary article provides improved fit and leakage protection with better comfort.
Patent CA-2131897-C (CA)
Inventor: MILLER JAMES R
IPC: B21D53/00
Filed: 1993-03-12
Granted: 1998-10-13
Abstract: The present invention teaches a combined air/liquid separator and recovery tank for use on a hot water carpet extractor. The combined tank and separator are particularly suited for an upright style of carpet extractor and features easy removal for emptying the recovery tank at a site remote from the extractor.
Patent CA-2135430-C (CA)
Title: Scrubber for flue-gas desulfurizing
Inventor: RISSE THEO
IPC: B01D53/50
Filed: 1994-11-09
Granted: 1999-07-06
Abstract: A scrubbing tower for flue-gas desulfurization has a device for introducing additives like lime and limestone to the reaction zone of the scrubber by feeding those additives to a recirculating system recirculating the liquid through the sump. The recirculating system can also be used to withdraw the suspension from the columnwhose sump is cylindrical with a flat bottom. Recirculated liquid is introduced close to this bottom by the recirculating pump. With the scrubbing tower of the invention excessive tower height is avoided and effective sump mixing and internal circulation is achieved. Furthermore, shut down of the gas scrubbing operation no longer leads to difficulties in redistributing calcium sulfate deposits in the sump upon restart.
Patent CA-2137972-C (CA)
Title: Beam splitter and optical coupler using the same
Inventor: YOKOYAMA JUN
IPC: G02B6/12
Filed: 1994-12-13
Granted: 1999-04-27
Abstract: A beam splitter is an optical multilayer film obtained by sequentially stacking first to fifth layers respectively having refractive indexes of n1 to n5 and geometrical thicknesses d1 to d5 on a substrate having a refractive index n G.  The refractive indexes of the substrate and the first to fifth layers satisfy any one of a relationship of n G = 1.45 to 1.60, n1 = 2.02 to 2.20, n2 = 2.25 to 2.38, n3 = 1.44 to 1.47, n4 = 2.25 to 2.38, and n5 = 1.44 to 1.47, a relationship of n G = 1.45 to 1.60, n1 = 1.44 to 1.47, n2 = 2.25 to 2.38, n3 = 1.44 to 1.47, n4 = 2.25 to 2.38, and n5 = 2.02 to 2.20, and a relationship of n G = 1.45 to 1.60, n1 = 1.44 to 1.47, n2 = 2.25 to 2.38, n3 = 2.02 to 2.20, n4 = 2.25 to 2.38, and n5 = 1.44 to 1.47, and a geometrical thickness d i of an ith layer of the first to fifth layers satisfies relation n i d i cos(.theta.i) = .lambda./4, where n i is a refractive index of the ith layer, .theta.i is an angle of refraction in the ith layer, and .lambda. is a center wavelength of an incident light beam to the multilayer film with an angle of incidence of 40° to 50°.
Patent CA-2139604-C (CA)
Title: Ion transport membranes with catalyzed dense layer
Inventor: CAROLAN MICHAEL F
IPC: C01B21/02
Filed: 1995-01-05
Granted: 1999-03-30
Abstract: The present invention relates to surface catalyzed ion transport membranes which demonstrate superior oxygen flux. The membranes comprise a dense multicomponent metallic oxide layer having a first surface and a second surface wherein the first surface is coated with a catalyst such as a metal or an oxide of a metal selected from Groups II, V, VI, VII, VIII, IX, X, XI, XV and the F Block lanthanides of the Periodic Table of the Elements. One or more porous layers formed from a mixed conducting multicomponent metallic oxide or a material whichis not mixed conducting under process operating conditions may be formed contiguous to the second surface of the dense layer. The claimed membranes are capable of separating oxygen from oxygen-containing gaseous mixtures.
Patent CA-2140159-C (CA)
Inventor: WIXEY BARRY D
IPC: B25H1/04
Filed: 1995-01-13
Granted: 1997-08-19
Abstract: Apparatus for supporting an object which includes at least two leg members attached to and capable of folding under an object-supporting surface.  The leg members are pivotally attached to the object-supporting surface at pivot axes offset from one another relative to the object-supporting surface so that the leg members may fold under the object-supporting surface without interfering with one another. The apparatus includes diagonal supports, attached from the leg members to the object-supporting surface, which are designed to fold with the leg members.  The apparatus may also include side rails defining  the  object-supporting  surface.    The  side  rails  are configured to releasably attach to a specially configured base portion on an object such as a miter saw.
Patent CA-2140929-C (CA)
Title: Hydroxyethylamino sulfonamides useful as retroviral protease inhibitors
Inventor: VAZQUEZ MICHAEL L
IPC: C07D213/53
Filed: 1993-08-24
Granted: 2006-09-12
Abstract: .alpha.- and .beta.-amino acid hydroxyethylamino sulfonamide compounds are effective as retroviral protease inhibitors, and in particular as inhibitors of HIV protease.
Patent CA-2145744-C (CA)
Title: Synthetic yarn with heat-activated binder fiber
Inventor: LOFQUIST ROBERT ALDEN
IPC: D02G3/40
Filed: 1993-10-08
Granted: 2005-06-14
Abstract: A synthetic yarn made from a blend of base fibers selected from the group consisting of polyester, nylon 6 and nylon 66, and 1-12 weight percent of a heat activated binder fiber having a melting point within the range of 165-190 °C, said binder fiber being made from a copolyamide which is derived from a mixture of 50 to 85 wt.  % caprolactam, 0 to 40 wt. % hexamethylenediamine adipate or a combination of hexamethylenediamine and adipic acid, and optionally a salt selected from the group consisting of hexamethylenediamine dodecanedioate, hexamethylenediamine azeleate, hexamethylenediamine sebacate and hexamethylenediamine terephthalate; and a chain terminator selected from at least one of the group consisting of a fatty acid and a fatty amine, wherein said fatty acid or fatty amine include at least 14 carbon atoms. The binder fiber is capable of being pelletized into chips, leached and spun into yarn on a package without any significant sticking either of the chips to one another or the yarn on the package.
Patent CA-2151093-C (CA)
Title: Method for producing gradient tonal representations and a printhead for producing the same
Inventor: WALLACE DAVID B
IPC: B41J2/21
Filed: 1995-06-06
Granted: 1998-11-03
Abstract: A method of producing, on a physical medium, a gradient tonal representation of an image and a printhead for producing the same.  An input image is divided into first and second regions.  First, continuously variable intensity level, continuous tone and second,  discretely variable intensity level, half-tone portions of the representation which respectively correspond to the first and second regions of the image are then printed by depositing selected quantities of ink on the first and second portions of the physical medium such that each pixel thereof has an ink intensity level corresponding to the image intensity level for the corresponding one of the pixels of the first region of the image.  The ink is deposited on the second portion of the physical medium by depositing a spot of ink having a first diameter on selected ones of the pixels of the second portion, depositing a spot of ink having a second diameter on others of the pixels of the second portion and depositing no ink on still others of the pixels of the second portion such that the second portion of the representation has the desired ink intensity level.  The color of the ink ejected may be black, in which case, the gradient  tonal  representation  produced  thereby shall be a gray scale representation, or other color such as yellow, cyan or magenta.
Patent CA-2154437-C (CA)
Title: Method for manufacturing biodegradable molded articles
Inventor: ANDO SADAMASA
IPC: C08L89/00
Filed: 1995-07-10
Granted: 2000-09-05
Abstract: A  raw material  formed  by  a  mixture  of,  for example, soybean protein and water, is extruded by an extruder.    Then,   high-frequency   electroconductive heating is performed by placing the material between a pair of electrodes and applying a voltage between the electrodes.   As  a  result,  a  biodegradable  molded article is obtained.   In this method,  biodegradable molded articles  having  a  uniform  structure  are manufactured  in  a  short  period  of  time  without increasing the  cost  of  equipment  or worsening  the working environment.